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Drug Interactions between Dalalone DP and glycerol phenylbutyrate

This report displays the potential drug interactions for the following 2 drugs:

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Interactions between your drugs

Moderate

dexAMETHasone glycerol phenylbutyrate

Applies to: Dalalone DP (dexamethasone) and glycerol phenylbutyrate

MONITOR: Drugs that can increase plasma ammonia levels such as corticosteroids, haloperidol, or the anticonvulsants carbamazepine, topiramate, and phenobarbital may interfere with the therapeutic effects of phenylbutyrate therapy in the management of urea cycle disorders. Corticosteroids can cause the breakdown of body protein, which may lead to increased ammonia levels. The use of haloperidol has been associated with hyperammonemia in a young child with citrullinemia, an inherited disorder of ammonia excretion. The mechanism for haloperidol, carbamazepine, topiramate, and phenobarbital has not been established.

MANAGEMENT: Plasma ammonia levels should be closely monitored when corticosteroids, haloperidol, carbamazepine, topiramate, or phenobarbital are used in patients with urea cycle disorders receiving phenylbutyrate therapy.

References (3)
  1. (2001) "Product Information. Buphenyl (sodium phenylbutyrate)." Horizon Therapeutics USA Inc
  2. Cerner Multum, Inc. "Australian Product Information."
  3. (2013) "Product Information. Ravicti (glycerol phenylbutyrate)." Hyperion Therapeutics Inc

Drug and food interactions

No alcohol/food interactions were found. However, this does not necessarily mean no interactions exist. Always consult your healthcare provider.

Therapeutic duplication warnings

No warnings were found for your selected drugs.

Therapeutic duplication warnings are only returned when drugs within the same group exceed the recommended therapeutic duplication maximum.

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Drug Interaction Classification

These classifications are only a guideline. The relevance of a particular drug interaction to a specific individual is difficult to determine. Always consult your healthcare provider before starting or stopping any medication.
Major Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit.
Moderate Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
Minor Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan.
Unknown No interaction information available.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

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